Home / 1,188,664.11-1,640,356.33-672,406.95

Finding the Fourth Proportional to 1,188,664.11, 1,640,356.33 and 672,406.95

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Solution

The fourth proportional to 1,188,664.11, 1,640,356.33 and 672,406.95 is: 927,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,664.11 : 1,640,356.33 = 672,406.95 : x
  2. Step 2: Convert to fraction form
    1,188,664.11/1,640,356.33 = 672,406.95/x
  3. Step 3: Cross multiply
    1,188,664.11x = 1,640,356.33 × 672,406.95
  4. Step 4: Simplify right side
    1,188,664.11x = 1,102,986,996,768.49
  5. Step 5: Solve for x
    x = 1,102,986,996,768.49/1,188,664.11
  6. Step 6: Final answer
    x = 927,921.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.